Question

我正在使用docker-for-desktop（适用于Mac的docker）并已安装入口控制器

$kubectl get pods -n ingress-nginx
NAME                                        READY   STATUS    RESTARTS   AGE
nginx-ingress-controller-78474696b4-8vmbr   1/1     Running   0          20d

，但无法处理示例服务的流量。这是一个示例nginx服务：

$kubectl run --image nginx webserver
$kubectl expose deploy webserver --port 80 --type NodePort

其运行方式为：

$kubectl get services
NAME         TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
kubernetes   ClusterIP   10.96.0.1        <none>        443/TCP        40d
webserver    NodePort    10.109.250.166   <none>        80:31805/TCP   9m

和sample-ingress.yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: webserver-sample
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - http:
      paths:
      - path: /foo
        backend:
          serviceName: webserver
          servicePort: 80

并申请：

kubectl apply -f sample-ingress.yaml

ingress运行方式为：

$kubectl get ing
NAME               HOSTS   ADDRESS     PORTS   AGE
webserver-sample   *       localhost   80      7m

服务正在按预期运行（返回200）：

curl http://localhost:31805/

但是问题是我无法打http://localhost/foo

$curl http://localhost/foo
curl: (7) Failed to connect to localhost port 80: Connection refused

任何有关如何调试该问题的建议将不胜感激

[更新]这是@VKR要求的所有服务的列表

$kubectl get svc --all-namespaces -o wide
NAMESPACE       NAME            TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE   SELECTOR
default         kubernetes      ClusterIP   10.96.0.1        <none>        443/TCP                      40d   <none>
default         webserver       NodePort    10.107.135.81    <none>        80:32361/TCP                 9h    run=webserver
docker          compose-api     ClusterIP   10.108.251.142   <none>        443/TCP                      40d   com.docker.deploy-namespace=docker,com.docker.fry=compose.api,com.docker.image-tag=v0.4.12
ingress-nginx   ingress-nginx   NodePort    10.106.47.48     <none>        80:31448/TCP,443:31512/TCP   20d   app.kubernetes.io/name=ingress-nginx,app.kubernetes.io/part-of=ingress-nginx
kube-system     kube-dns        ClusterIP   10.96.0.10       <none>        53/UDP,53/TCP                40d   k8s-app=kube-dns

，这里也描述了入口：

$kubectl describe ing webserver-sample
Name:             webserver-sample
Namespace:        default
Address:          localhost
Default backend:  default-http-backend:80 (<none>)
Rules:
  Host  Path  Backends
  ----  ----  --------
  *
        /foo   webserver:80 (10.1.0.151:80)
Annotations:
  kubectl.kubernetes.io/last-applied-configuration:  {"apiVersion":"extensions/v1beta1","kind":"Ingress","metadata":{"annotations":{"nginx.ingress.kubernetes.io/rewrite-target":"/"},"name":"webserver-sample","namespace":"default"},"spec":{"rules":[{"http":{"paths":[{"backend":{"serviceName":"webserver","servicePort":80},"path":"/foo"}]}}]}}

  nginx.ingress.kubernetes.io/rewrite-target:  /
Events:
  Type    Reason  Age    From                      Message
  ----    ------  ----   ----                      -------
  Normal  CREATE  9m42s  nginx-ingress-controller  Ingress default/webserver-sample
  Normal  UPDATE  9m30s  nginx-ingress-controller  Ingress default/webserver-sample

Answer 1

仅在Windows的Docker中复制了您的案例-对我来说它运行良好。尝试使用NodePort和ClusterIP选项公开-结果相同-可以以下是使用ClusterIP kubectl expose deploy webserver --port 80 --type ClusterIP

的示例

PS C:\Windows\system32> kubectl get pods -n ingress-nginx
NAME                                        READY     STATUS    RESTARTS   AGE
nginx-ingress-controller-78474696b4-29fps   1/1       Running   0          2m

PS D:\> kubectl.exe get svc --all-namespaces
NAMESPACE       NAME            TYPE           CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
default         kubernetes      ClusterIP      10.96.0.1        <none>        443/TCP                      26m
default         webserver       ClusterIP      10.110.218.48    <none>        80/TCP                       8m
docker          compose-api     ClusterIP      10.105.175.29    <none>        443/TCP                      25m
ingress-nginx   ingress-nginx   LoadBalancer   10.101.213.113   localhost     80:31191/TCP,443:32056/TCP   19m
kube-system     kube-dns        ClusterIP      10.96.0.10       <none>        53/UDP,53/TCP                26m

我用过的Yaml：

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: webserver-sample
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - http:
      paths:
      - path: /foo
        backend:
          serviceName: webserver
          servicePort: 80
      - path: /bar
        backend:
          serviceName: webserver
          servicePort: 80

/foo和/bar的卷曲返回308 Permanent Redirect（这是预期的，并且是设计使然的）

PS D:\> curl http://localhost/foo
curl : 308 Permanent Redirect
nginx/1.15.10
At line:1 char:1
+ curl http://localhost/foo
+ ~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand
PS D:\> curl http://localhost/bar
curl : 308 Permanent Redirect
nginx/1.15.10
At line:1 char:1
+ curl http://localhost/bar
+ ~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand

/smth的卷曲返回404

PS D:\> curl http://localhost/smth
curl : 404 Not Found
nginx/1.15.10
At line:1 char:1
+ curl http://localhost/smth
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand

尝试使用最新说明和Yamls从头开始重新安装所有程序。它应该可以正常工作

入口控制器未处理流量

1 个答案: